Whatman Quantitative Filter Papers - Ashless - Grade 44

Whatman Quantitative Filter Papers, Ashless, Grade 44

Cytiva's Whatman Grade 44 quantitative paper is a thin version of Grade 42 ashless paper. The thinness reduces the overall ash content, making Grade 44 well suited for analyses relying on ash-free dry weight.

Specification

Parameter Grade 44 Ashless Filter Paper, Thin

Grade Grade 44 

Type Ashless 

Typical Particle Retention in Liquid1 3 µm 

Nominal thickness 176 µm

Typical water flow rate2 11 ml/min 

Nominal basis weight 80 g/m²

Nominal air flow rate 56 s/100 mL/in² 

Nominal Ash Content3 0.007% 

Material High-quality cotton linters 

Alpha Cellulose Content Min. ≥98% 

Typical Trace Element Levels Aluminium 2.5 µg/g Antimony <0.5 µg/g Arsenic <0.5 µg/g Barium <0.5 µg/g Boron <1 µg/g Calcium 8.3 µg/g Chromium 1.5 µg/g Copper 2 µg/g Iron 12 µg/g Lead <0.5 µg/g Magnesium 4 µg/g Manganese <0.5 µg/g Mercury <0.5 µg/g Potassium 2.3 µg/g Silicon 6.2 µg/g Sodium 16.8 µg/g Zinc 64.5 µg/g 

Application Designed for gravimetric analysis and the preparation of samples for instrumental analysis.

• 1444-150 Grade 44 Ashless Filter Paper, Thin, 150 mm circle (100 pcs)
• 1444-125 Grade 44 Ashless Filter Paper, Thin, 125 mm circle (100 pcs)
• 1444-110 Grade 44 Ashless Filter Paper, Thin, 110 mm circle (100 pcs)
• 1444-090 Grade 44 Ashless Filter Paper, Thin, 90 mm circle (100 pcs)
• 1444-070 Grade 44 Ashless Filter Paper, Thin, 70 mm circle (100 pcs)
• 1444-240 Grade 44 Ashless Filter Paper, Thin, 240 mm circle (100 pcs)
• 1444-185 Grade 44 Ashless Filter Paper, Thin, 185 mm circle (100 pcs)

Alat Laboratorium Umum